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| 型号： | SP331ET-L |
| 厂商： | Exar Corporation |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232/485 PROG 28WSOIC |
| 标准包装： | 27 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 4/4 |
| 规程： | RS232，RS485 |
| 电源电压： | 5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 管件 |
| 其它名称： | 1016-1134-5 |
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP33_00_0260
The SP33 is a programmable RS-232 and/or RS-485 transceiver IC. The SP33 contains
four drivers and four receivers when selected in RS-232 mode; and two drivers and two
receivers when selected in RS-485 mode. The SP33 also contains a dual mode which has
two RS-232 drivers/receivers plus one differential RS-485 driver/receiver.
The RS-232 transceivers can typically operate at 230kbps while adhering to the RS-232 speci-
fications. The RS-485 transceivers can operate up to 10Mbps while adhering to the RS-485
specifications. The SP331 includes a self-test loopback mode where the driver outputs are
internally configured to the receiver inputs. This allows for easy diagnostic serial port testing
without using an external loopback plug. The RS-232 and RS-485 drivers can be disabled
(High-Z output) by controlling a set of four select pins.
DESCRIPTION
+5V Only Operation
Software Programmable RS-232 or RS-485
Selection
Four RS-232 Transceivers in RS-232 Mode
Two RS-485 Full-Duplex Transceivers in
RS-485 Mode
Two RS-232 Transceivers and One RS-485
Transceiver in Dual Mode
Self-Testing Loopback Mode
Full Driver Tri-State (Hi-Z) Control
Ideal for RS-232 to RS-485 conversion
SP33
Programmable Dual RS-232/RS-485 Transceiver
TI4
SEL_B
TX4
TX3
VCC
TX1
TX2
GND
C1+
V+ (VDD)
C2+
C1–
C2–
V– (VSS)
TI3
TI2
TI1
SEL_C
SEL_A
SEL_D
RX4
RX3
RX2
RX1
RI4
RI3
RI2
RI1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SP331
TYPICAL APPLICATIONS CIRCUIT
SEL A
TTL/CMOS
0.1F
C1+
C1-
C2+
C2-
1
SEL B
2
+5V
VCC
5
GND
8
9
11
12
13
19
20
22
24
26
27
28
TTL/CMOS
T1
T3
R1
RS-485
0V
V+
V-
0V
SEL C
RS-485
4
6
7
10
14
15
16
23
25
3
RI1
RI2
TX3
TX4
TX1
TX2
TI1
TI2
TI3
TI4
RX1
RX2
TTL/CMOS
21
R3
17
18
RI4
RI3
RX3
RX4
15K
400K
Vcc
400K
Vcc
SEL D
RS-485
+5V
SP331
15K
0.1F
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP331ET-L/TR | 功能描述:RS-232接口集成电路 Programmable RS-232/RS-485 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| SP331K | 制造商:CDE 制造商全称:Cornell Dubilier Electronics 功能描述:Ceramic Capacitors |
| SP332 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:RS-232/RS-485 Multi-Mode Serial Transceiver |
| SP3-3-20 | 制造商:RHOMBUS-IND 制造商全称:Rhombus Industries Inc. 功能描述:SP3 Series Mini-SIP Passive Delay Modules |
| SP332-B4 | 制造商:Leviton Manufacturing Co 功能描述: |
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